CN108716029A - A kind of preparation method of compound pipe tobacco - Google Patents
A kind of preparation method of compound pipe tobacco Download PDFInfo
- Publication number
- CN108716029A CN108716029A CN201810560239.2A CN201810560239A CN108716029A CN 108716029 A CN108716029 A CN 108716029A CN 201810560239 A CN201810560239 A CN 201810560239A CN 108716029 A CN108716029 A CN 108716029A
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- Prior art keywords
- component
- temperature
- pipe tobacco
- preparation
- tow
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Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/02—Manufacture of tobacco smoke filters
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/32—Side-by-side structure; Spinnerette packs therefor
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/34—Core-skin structure; Spinnerette packs therefor
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/12—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyamide as constituent
Abstract
The present invention relates to a kind of preparation method of compound pipe tobacco, including drying crystalline, melt composite spinning, the processes such as drawing-off and nervous thermal finalization, curling, drying, relaxation heat setting, packing.The pipe tobacco that patent is related to need not add water-based emulsion glue or triacetyl glycerine plasticizer in filter stick forming process, can be used for preparing no added safe and healthy filter stick.
Description
Technical field
The present invention relates to cigarette fields, and in particular to a kind of preparation method of compound pipe tobacco.
Background technology
Currently, filter-tip material is mainly Celluloseacetate cigarette filter tow and polypropylene tows, total amount nearly 30 on domestic market
Ten thousand tons, the dosage of wherein Celluloseacetate cigarette filter tow has accounted for 90% or more, and medium-to-high grade cigarette is used primarily in due to haveing excellent performance
In, however the raw material of Celluloseacetate cigarette filter tow, technical equipment etc. are dependent on import, in 90 years last century of Sino-US relations anxiety
Polypropylene tows are derived as alternative materials certain applications in Low-end Cigarettes for market.Celluloseacetate cigarette filter tow derives from
Timber, polypropylene tows derive from oil, and a large amount of use all has environmental problem and energy problem.
Fibre beam for polypropylene cigarette prepares filter stick using water-based emulsion adhesive curing molding, is needed by baking oven after sizing
The dry moisture removed in water-base cement.It is another since in glue, containing a large amount of water, the quality of cladding roll paper on the one hand can be influenced
Aspect needs a large amount of energy consumptions to fall moisture evaporation, and increases facility load, limits driving speed, affects efficiency.This
Outside, the chemical residue contained in water-base cement influences the health of smoking population on tow surface.
Cellulose diacetate pipe tobacco uses plasticizer triacetyl glycerine curing molding, only needs to place after the application
A period of time can molding bonded.However, triacetyl glycerine belongs to less toxic chemicals (LD50：Rat oral 3000mg/kg),
, in smoking cigarette, triacetyl glycerine is easily precipitated enters human body with flue gas for we, has potentially hazardous property to body.
The deficiency of glue or plasticizer must be all used in view of prior art filter stick, the present invention provides a kind of novel
The preparation method of compound pipe tobacco can not only reach the physical and chemical performance index of existing pipe tobacco, and in filter stick
Any glue or plasticizer can not be added, physical index reaches by the physical method molding bonded of heating in forming process
It is required that.It is all protected from material (poly-lactic acid material can be absorbed by body metabolism, FDA certifications) and technique (no glue and plasticizer addition)
It has demonstrate,proved this patent and has referred to a kind of compound pipe tobacco of safety and environmental protection.
Invention content
The purpose of the present invention is to provide a kind of safe and environment-friendly composite smoke tow preparation processes.
The present invention provides a kind of preparation method of compound pipe tobacco, and wherein pipe tobacco is compound by component A and component B
Spinning is prepared, and component A is dystectic polyethylene terephtalate, nylon 6, nylon66 fiber or dystectic poly-
Lactic acid (blend of PDLA and PLLA), component B are the polylactic acid PLA of conventional melting point, and this approach includes the following steps：
1) drying crystalline：Component B slices control water content in polylactic acid in 70-120 DEG C of drying crystalline, time 8-15h
Less than 50ppm；Component A slices are less than 50ppm in 105-170 DEG C of drying crystalline, time 5-10h, control water content；
2) composite molten spinning：The hole count of spinneret is 700-1500；The extruder temperature of component A spinning is 280-310 DEG C,
Spin manifold temperature is 270-310 DEG C, and the extruder temperature of component B spinning is 220-250 DEG C, and spin manifold temperature is 230-250 DEG C, spinning speed
Rate 800-1500m/min；18-25 DEG C of cooling temperature, wind pressure 300-700Pa；
3) drawing-off：The speed ratio (draw ratio) of speed draw roll is 3.0-4.5；The temperature of drawing-off water bath is 50-80 DEG C；
4) nervous thermal finalization：Setting roller is by the way of built-in electromagnetic heating, and temperature deviation is controlled at ± 0.2 DEG C, heat
Setting roll quantity 15,85-135 DEG C of temperature；
5) it crimps：Temperature is controlled at 90-120 DEG C, main pressure 0.2-0.5Mpa, back pressure 0.2-0.6MPa；
6) drying and relaxation heat setting：Temperature control is at 80-120 DEG C, time 8-15 minute.
In the above method：
It is preferred that the drying temperature in the step 1) uses ladder-elevating temperature mode, 5-10 DEG C of heating rate/h.
It is preferred that the spinning pack is core-skin, arranged side by side or island structure, cross sectional shape can be trilobal, circle, ellipse
Shape or rectangle etc..
It is preferred that the component A is dystectic polyethylene terephtalate, nylon 6, nylon66 fiber or dystectic
Polylactic acid (blend of PDLA and PLLA), 210-260 DEG C of fusing point；Component B is the polylactic acid PLA of conventional melting point, fusing point 160-
180℃。
It is preferred that the fusing point of described two components it is poor >=40 DEG C, more preferably >=50 DEG C.
It is preferred that accounting >=50%wts of the component A in tow, more preferably >=65%wt.
It is preferred that compound tow is skin-core structure, component A is sandwich layer, and component B is cortex.
It is preferred that compound tow is parallel construction.
It is preferred that compound tow is island structure, component A is island, and component B is sea.
The cross sectional shape of compound tow can be trilobal, circle, ellipse or rectangle etc..
The total fiber number of compound tow is 1.7-5.5ktex, filament number 2.0-3.5dtex, 20-30/25mm of crispation number.
The technique of the compound pipe tobacco of the present invention has the following advantages that：
1, tow of the present invention can carry out filter stick formation by way of heat bonding, need not add water-based emulsion
Glue or plasticizer, improve safety.
2, high melting point component can select traditional fibre PET and PA, can be greatly lowered cost (PET and PA fibers
Price be PLA fiber prices 1/3 and 1/2), outer layer, which is polylactic acid, can ensure safety and strainability.
3, contain high melting point component in tow, it is ensured that crimped at a high temperature of 100-120 DEG C in tow process
Sizing, improves curling and the resilience performance of tow, improves out stick rate, and solving existing polylactic acid tow, to go out stick rate low not
Foot.
4, compared with prior art：
CN102691121B is related to polylactic acid/polypropylene cigarette compound tow and preparation method thereof of a kind of " core-skin type ",
Cortex is conventional melting point polylactic acid (163-173 DEG C of fusing point), and sandwich layer is polypropylene (the polypropylene fusing point 160- of market spinning-grade
176℃).The fusing point of two kinds of components is close, can not carry out filter stick formation by thermal bonding technology.
CN103074716B is related to a kind of sheath-core polylactic acid tobacco tow and filter stick and preparation method thereof, and cortex is eutectic
Point polylactic acid or polylactic acid base co-polymer (120-150 DEG C of fusing point), sandwich layer are conventional melting point polylactic acid (150-175 DEG C of fusing point)；
It is the 4-12wt% of tow that filter stick formation, which selects triacetyl glycerine, additive amount,.CN105887224A is related to one-step method and prepares skin
The method of core pattern composite polylactic acid pipe tobacco, cortex are low melting point polylactic acid (125-135 DEG C of fusing point), and sandwich layer is conventional melting point
Polylactic acid (160-176 DEG C of fusing point).11-15/the 25mm of crispation number of tow.
In producing tow process, technology section and setting process section are needed in high temperature (100-120 DEG C) item polylactic acid
It is carried out under part, just can guarantee good crimp property and resilience performance.However the polylactic acid fusing point low (150-175 DEG C) of routine,
Heat distortion temperature is low, heat resistance is poor, causes the temperature of technology section and setting process section that can only be set in 50-80 DEG C of range
Interior, crimped resilient can be poor, and it is low that the tow being prepared " goes out stick rate " when producing filter stick, compared to traditional diacetate fiber
Plain tow and polypropylene tows want low 20-30%, and (this also mentions this to deficiency in economic performance in the background technology of CN103074716B
A problem).
The core-skin bicomponent structural that patent CN103074716B and CN105887224A are used, cortex are the poly- breast of low melting point
The copolymer of acid or polylactic acid, fusing point is 30-50 DEG C also lower than conventional polylactic acid, and sandwich layer is the polylactic acid of conventional melting point.In the presence of
Following some problems：1) cortex fusing point is low, and softening point is lower, and drawing-off water bath temperature can only be set in 40-60 DEG C, and drawing-off
Roller must lead to circulating water, and otherwise it is hardened adhesion occur for tow, can not normal use, production equipment needs to be transformed.2) it crimps
Process section cannot not only lead to steam heating, and crimping machine needs to freeze water cooling, and curling machine equipment needs replacing；In addition, by
In being unable to heat-shaping in the back pressure case slot in crimping machine, cause crispation number less, and crimpness cannot be kept, in rear road work
Tow crimping is easy to be straightened and cannot reply in program process.3) drying and shaping process section, temperature is no more than 60 DEG C, otherwise silk
Beam, which is all bonded together, to be used；The drying of one side tow needs 25-35 minutes, and the time is equivalent to conventional melting point polylactic acid
2.5-3.5 times of tow, production efficiency significantly declines, and another aspect tow is unable to high-temperature shaping, leads to the crimpiness of tow
Can be excessively poor with resilience performance, " going out stick rate " during filter stick formation is than traditional Celluloseacetate cigarette filter tow and polypropylene tows
Want low 30-45%, economic benefit poor.
The two-component tow that this patent is related to selects the group of dystectic component A (210-260 DEG C of fusing point) and conventional melting point
B polylactic acid (160-180 DEG C of fusing point) is divided to be prepared.Compared with prior art, curling and setting process section can be at 100-120 DEG C
It is carried out under steam, the crimp property and resilience performance of tow, the tow being prepared " going out stick rate " and tradition is greatly improved
Celluloseacetate cigarette filter tow and polypropylene tows are suitable, have reached 1,500,000/ton or more, have higher practical value.
In addition, low melting point polylactic acid (mainly L lactic acid and D lactic acid in patent CN103074716B and CN105887224A
Copolymer) or copolymer fusion temperature wider range, i.e. melting range is wide, during thermal bonding technology be difficult control, temperature
Inadequate filter stick hardness is not up to standard, and the slightly higher easy bonding of temperature is excessive lump phenomenon occurs, causes filter stick index unqualified, filter stick
Resistance to suction and hardness CV values do not meet index request.And the PLA of conventional melting point is more regular because 97% or more is L lactic acid
Homopolymer, it is narrow as cortex " melting range ", it is easy to control thermal bonding technology, the resistance to suction of filter stick and the CV values of hardness are small, with two acetic acid
Cellulose tow filter stick is suitable.
Specific implementation mode
The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention..
Embodiment 1：The preparation method of tow
1, feed stock chip：Component A polyethylene terephtalates, 260 DEG C of fusing point, component B are the poly- of conventional melting point
Lactic acid PLA (170 DEG C of fusing point)；Component A accounts for the 70%wt of total amount.
2, the preparation process of tow is：
1) drying crystalline：(5 DEG C/h of heating rate, temperature reach 110 to drying crystalline to component B slices between 70-110 DEG C
DEG C when remain unchanged), time 15h, control polylactic acid in water content be less than 50ppm；Component A slices are between 105-170 DEG C
Drying crystalline (10 DEG C/h of heating rate, temperature remain unchanged when reaching 170 DEG C), time 10h, control water content are less than
50ppm；
2) composite molten spinning：The hole count of spinneret is 800；The extruder temperature of component A spinning is 280 DEG C, spin manifold temperature
It it is 290 DEG C, the extruder temperature of component B spinning is 225 DEG C, and spin manifold temperature is 230 DEG C, spinning rate 1500m/min；Cooling temperature
19 DEG C, wind pressure 700Pa；
3) drawing-off：The speed ratio (draw ratio) of speed draw roll is 3.0；The temperature of drawing-off water bath is 80 DEG C；
4) nervous thermal finalization：Setting roller is by the way of built-in electromagnetic heating, setting roller quantity 15, temperature 85-
135 DEG C (the 1-3 heat roller temperature is 85 DEG C, and the 4-6 heat roller temperature is 95 DEG C, and the 7-9 heat roller temperature is 105 DEG C, the
10-12 heat roller temperature is 115 DEG C, and the 13-15 heat roller temperature is 135 DEG C)；
5) it crimps：Temperature is controlled at 90 DEG C, main pressure 0.3Mpa, back pressure 0.2MPa；
6) drying and relaxation heat setting：Temperature controls in 80-120 DEG C of (80 DEG C of area's temperature, two 100 DEG C of area's temperature, 3rd area
110 DEG C of temperature, four 120 DEG C of area's temperature, five 80 DEG C of area's temperature), 9 minutes time.
3, the tow index being prepared is：Monofilament linear density 3.5dtex, individual filament cross section are the trilobed structure of core-skin type,
Tow total linear density 3.85ktex, crispation number 27/25mm, ultimate strength 19.5cn/tex, extension at break 25.6%, moisture content
0.3%.
4, the filter stick physical index being prepared by thermal bonding technology (170 DEG C of tack temperature, 3 minutes time) is：
The noxious substance index of filter stick is (being compared with same specification vinegar fibre filter stick)：
Seven kinds of harmful components absorption index of cigarette
Absorption index (the unit of carbonyls：Microgram /)
Embodiment 2：The preparation method of tow
1, feed stock chip：Component A is dystectic polylactic acid (PLLA and PDLA1:1 blend, 210 DEG C of fusing point), component B
For the polylactic acid PLA (160 DEG C of fusing point) of conventional melting point；Component A accounts for the 65%wt of total amount.
2, the preparation process of tow is：
1) drying crystalline：(5 DEG C/h of heating rate, temperature reach 110 to drying crystalline to component B slices between 70-110 DEG C
DEG C when remain unchanged), time 8h, control polylactic acid in water content be less than 50ppm；Component A slices are done between 105-160 DEG C
Constipation crystalline substance (10 DEG C/h of heating rate, temperature remain unchanged when reaching 160 DEG C), time 5h, control water content are less than 50ppm；
2) composite molten spinning：The hole count of spinneret is 1200；The extruder temperature of component A spinning is 290 DEG C, spin manifold temperature
It it is 280 DEG C, the extruder temperature of component B spinning is 250 DEG C, and spin manifold temperature is 230 DEG C, spinning rate 1100m/min；Cooling temperature
25 DEG C, wind pressure 300Pa；
3) drawing-off：The speed ratio (draw ratio) of speed draw roll is 4.2；The temperature of drawing-off water bath is 62 DEG C；
4) nervous thermal finalization：Setting roller is by the way of built-in electromagnetic heating, setting roller quantity 15, temperature 85-
130 DEG C (the 1-3 heat roller temperature is 85 DEG C, and the 4-6 heat roller temperature is 95 DEG C, and the 7-9 heat roller temperature is 105 DEG C, the
10-12 heat roller temperature is 115 DEG C, and the 13-15 heat roller temperature is 130 DEG C)；
5) it crimps：Temperature is controlled at 105 DEG C, main pressure 0.5Mpa, back pressure 0.6MPa；
6) drying and relaxation heat setting：Temperature controls in 80-118 DEG C of (80 DEG C of area's temperature, two 100 DEG C of area's temperature, 3rd area
110 DEG C of temperature, four 118 DEG C of area's temperature, five 80 DEG C of area's temperature), 13 minutes time.
3, the tow index being prepared is：Monofilament linear density 3.2dtex, individual filament cross section are the circular configuration of parallel type,
Tow total linear density 4.15ktex, crispation number 26/25mm, ultimate strength 18.5cn/tex, extension at break 27.0%, moisture content
0.3%.
4, the filter stick physical index being prepared by thermal bonding technology (168 DEG C of tack temperature, 3 minutes time) is：
| Length mm | Hardness % | Circumference mm | Resistance to suction Pa | Go out stick rate (ten thousand/ton) |
| 120 | 91 | 24.1 | 2950 | 156 |
The noxious substance index of filter stick is (being compared with same specification vinegar fibre filter stick)：
Seven kinds of harmful components absorption index of cigarette
Absorption index (the unit of carbonyls：Microgram /)
Embodiment 3：The preparation method of tow
1, feed stock chip：Component A is dystectic PA6 (250 DEG C of fusing point), and component B is the polylactic acid PLA of conventional melting point
(170 DEG C of fusing point)；Component A accounts for the 65%wt of total amount.
2, the preparation process of tow is：
1) drying crystalline：Component B slices are in 70-110 DEG C of drying crystalline (5 DEG C/h of heating rate, when temperature reaches 110 DEG C
Remain unchanged), time 12h controls water content in polylactic acid and is less than 50ppm；Component A slices are in 110-150 DEG C of drying crystalline
(10 DEG C/h of heating rate, temperature remain unchanged when reaching 150 DEG C), time 5h, control water content are less than 50ppm；
2) composite molten spinning：The hole count of spinneret is 1500；The extruder temperature of component A spinning is 310 DEG C, spin manifold temperature
It it is 308 DEG C, the extruder temperature of component B spinning is 240 DEG C, and spin manifold temperature is 230 DEG C, spinning rate 800m/min；Cooling temperature
18 DEG C, wind pressure 600Pa；
3) drawing-off：The speed ratio (draw ratio) of speed draw roll is 4.5；The temperature of drawing-off water bath is 50 DEG C；
4) nervous thermal finalization：Setting roller is by the way of built-in electromagnetic heating, setting roller quantity 15, temperature 85-
120 DEG C (the 1-3 heat roller temperature is 85 DEG C, and the 4-6 heat roller temperature is 95 DEG C, and the 7-9 heat roller temperature is 105 DEG C, the
10-12 heat roller temperature is 115 DEG C, and the 13-15 heat roller temperature is 120 DEG C)；
5) it crimps：Temperature is controlled at 120 DEG C, main pressure 0.2Mpa, back pressure 0.3MPa；
6) drying and relaxation heat setting：Temperature controls in 85-115 DEG C of (85 DEG C of area's temperature, two 100 DEG C of area's temperature, 3rd area
110 DEG C of temperature, four 115 DEG C of area's temperature, five 85 DEG C of area's temperature), 15 minutes time.
3, the tow index being prepared is：Monofilament linear density 3.3dtex, individual filament cross section are the island structure of trilobal,
Tow total linear density 4.10ktex, crispation number 28/25mm, ultimate strength 19.5cn/tex, extension at break 29.0%, moisture content
0.4%.
4, the filter stick physical index being prepared by thermal bonding technology (166 DEG C of tack temperature, 3 minutes time) is：
| Length mm | Hardness % | Circumference mm | Resistance to suction Pa | Go out stick rate (ten thousand/ton) |
| 120 | 90 | 24.1 | 2920 | 160 |
The noxious substance index of filter stick is (being compared with same specification vinegar fibre filter stick)：
Seven kinds of harmful components absorption index of cigarette
Absorption index (the unit of carbonyls：Microgram /)
Comparative example 1-6：
Respectively with the implementation of the embodiment of CN102691121B 1, the embodiment of CN103074716B 1 and CN105887224A
Tow involved in example 1 carries out filter stick formation comparison, controls the resistance to suction of filter stick in 2950Pa and circumference 24.1mm or so, molding side
Method selects heat bonding and traditional gel-filling technology respectively.
Comparative situation is as follows：
As can be seen from the above table：
Compare patent CN102691121B due to ectonexine fusing point it is close, cannot by thermal bonding technology carry out filter stick at
Type；Using water-based emulsion glue, indices meet the requirements, but packet paper has watermark trace, circumference slightly irregular.
Patent CN103074716B is compared since the melting point polymer of outer layer is relatively low, tow is being crimped and reached in type-approval process
Less than requiring, cause " going out stick rate " relatively low, while being thermally bonded process to control, appearance largely bonds excessive (lump) and bonds
The phenomenon that insufficient (hardness is less than 85%, and hardness CV values are undesirable), using the thermal bonding technology of this patent, only 1,250,000
" going out stick rate " of branch.Filter stick formation is carried out using traditional triacetyl glycerine, " going out stick rate " has been increased to 1,480,000, still
Since triacetyl glycerine is not effective plasticizer of polylactic acid, there is apparent shrinkage phenomenon (length direction and straight in filter stick
Diameter direction has), length direction averagely has 2mm or so, circumference to be contracted to 23.9-24.0mm by the 24.1mm set, causes to filter
Stick index is not up to standard, quality decline.
The same CN103074716B of the problem of comparing patent CN105887224A.Refer to when selecting traditional water-based emulsion glue, items
Mark meets the requirements, only some flaws of appearance (packet paper has watermark trace, circularity slightly irregular).
Although above having used general explanation, specific implementation mode and experiment, the present invention is made to retouch in detail
It states, but on the basis of the present invention, it can be made some modifications or improvements, this is apparent to those skilled in the art
's.Therefore, these modifications or improvements without departing from theon the basis of the spirit of the present invention, belong to claimed
Range.
Claims (8)
1. a kind of preparation method of compound pipe tobacco, which is characterized in that the pipe tobacco is compound by component A and component B
Spinning is prepared, and the component A is the polymer of 210-260 DEG C of fusing point, and the component B is the polymerization of 160-180 DEG C of fusing point
Object, this approach includes the following steps：
1) drying crystalline：Component B slices control water content in polylactic acid and are less than in 70-120 DEG C of drying crystalline, time 8-15h
50ppm；Component A slices are less than 50ppm in 105-170 DEG C of drying crystalline, time 5-10h, control water content；
2) composite molten spinning：The hole count of spinneret is 700-1500；The extruder temperature of component A spinning is 280-310 DEG C, babinet
Temperature is 270-310 DEG C, and the extruder temperature of component B spinning is 220-250 DEG C, and spin manifold temperature is 230-250 DEG C, spinning rate
800-1500m/min；18-25 DEG C of cooling temperature, wind pressure 300-700Pa；
3) drawing-off：The speed ratio (draw ratio) of speed draw roll is 3.0-4.5；The temperature of drawing-off water bath is 50-80 DEG C；
4) nervous thermal finalization：Setting roller is by the way of built-in electromagnetic heating, and temperature deviation control is at ± 0.2 DEG C, thermal finalization
Roller quantity 15,85-135 DEG C of temperature；
5) it crimps：Temperature is controlled at 90-120 DEG C, main pressure 0.2-0.5Mpa, back pressure 0.2-0.6MPa；
6) drying and relaxation heat setting：Temperature control is at 80-120 DEG C, time 8-15 minute.
2. the preparation method of compound pipe tobacco according to claim 1, which is characterized in that the component A is poly- to benzene
The mixture of naphthalate PET or nylon 6 or nylon66 fiber or PLLA and PDLA, the component B are poly- breasts
Sour PLA.
3. the preparation method of compound pipe tobacco according to claim 1, which is characterized in that the drying in the step 1)
It is 5-10 DEG C/h that temperature, which uses ladder-elevating temperature mode, heating rate,.
4. the preparation method of compound pipe tobacco according to claim 2, which is characterized in that the component A is in the cigarette
With accounting >=65%wt in tow.
5. the preparation method of compound pipe tobacco according to claim 2, which is characterized in that the monofilament of the pipe tobacco
For skin-core structure, the component A is sandwich layer, and the component B is cortex.
6. the preparation method of compound pipe tobacco according to claim 2, which is characterized in that the monofilament of the pipe tobacco
For the component A and structure arranged side by side the component B.
7. the preparation method of compound pipe tobacco according to claim 2, which is characterized in that the monofilament of the pipe tobacco
For island structure, the component A is island, and the component B is sea.
8. the preparation method of compound pipe tobacco according to claim 1, which is characterized in that total fibre of the compound tow
Degree is 1.7-5.5ktex, and filament number 2.0-3.5dtex, crispation number is 20-30/25mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810560239.2A CN108716029B (en) | 2018-06-03 | 2018-06-03 | Preparation method of composite cigarette tows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN110477449A (en) * | 2019-08-28 | 2019-11-22 | 深圳市智叶科技有限公司 | A kind of non-woven cotton filter tip and preparation method thereof |
| CN110938881A (en) * | 2019-11-20 | 2020-03-31 | 浙江佳人新材料有限公司 | Production process of recyclable degradable fiber |
| CN111109651A (en) * | 2019-12-30 | 2020-05-08 | 恒天长江生物材料有限公司 | Preparation method of biodegradable composite fiber glue-free hollow filter stick |
| CN111155180A (en) * | 2020-01-14 | 2020-05-15 | 北京服装学院 | Polylactic acid parallel composite fiber and preparation method thereof |
| CN112281228A (en) * | 2020-09-10 | 2021-01-29 | 深圳市华远新材料有限公司 | Cross-shaped sheath-core structure polylactic acid tow and preparation method thereof |
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| CN112281228A (en) * | 2020-09-10 | 2021-01-29 | 深圳市华远新材料有限公司 | Cross-shaped sheath-core structure polylactic acid tow and preparation method thereof |
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| CN108716029B (en) | 2021-07-16 |
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